Got dents in your tank(s)? Fill them with water and let them freeze-make sure it's a hard freeze or plug it well and put it in a freezer.
I didn't take before or after pics yet, but someone from a Harley shop gave me this tip, and it is better than trying to poke something in the filler and banging it around. I just emptied one last night after a good couple nights of single digit lows, and it popped out most of the dent and loosened the cruddy paint it had on the dent area. It will pop off the excess bondo, too. I'll take a pic to post of the 400f tank I just did, and maybe do another , but it for now looks like warm westerly for the next 10 days.